Means for securing basins, &amp;c., to slabs.



- UNITED E STATES.

PATENT OFFICE.

WILLIAM A. KEEN, OF BALTIMORE, MARYLAND.

MEAN s' Foa SAE-'oo atrio( BASIN/s, am., VTo sL'A'Bs.

SPECIFICATION arming par: of Leners Patent Ivo. 726.070, dated April 21, 1903.

` Applicationilled January 3l, 1903. Serial No. vl4l|24=5l v(No model.)

To all whom it muy concern:

Be it known that I, WILLIAM A. KEEN, a citizen of the United States, residing at Bal' timore, State of ll/Iaryland,'haveinvented certain new and useful Improvements in Means for Securing Basins or other Articles to Slabs, ot' which the followingr is a specication.

My invention relates to improvements in means for securing Washbasins or otherA articles to marble, slate, or other stone slabs.

The present invention relates more particularly to securing the bolt totheslab, the object being to provide means whereby the bolt may be quickly secured rigidly in place.

At the present time :the most common prac# tice is to drill holes or form a recess into the slab and insert the head end of the bolt and then pour molten `metal into the hole around the bolt-head. This is not satisfactory because of the trouble and labor involved, and, further, because the molten metal when cooling shrinks and the bolt is not held rigidly, and the metal must then be hammered and packed in around the bolt to secure the latter rigidly. Another practicev is 'to provide an expanding bolt tobe inserted into the recess, and while this is quicker than the other way it is too expensive.

By my invention the boltmay be quickly and rigidly secured in place and at very little cost.

The invention is illustrated intheaccompanying drawings, in which-'- Figure l illustrates a sectional detail view of a. portion of a slab and basin secured together by my improved device. Fig. 2 is a side elevation of the bolt. Fig. 3 is a perspective view of the expansible bushing. Fig. 4 is a plan View of the clamp device. Fig. 5 illustrates a sectional View of a slab with .the bolt in place and the eXpansibie bushing` bottom surface of said slab.

The bolt a has a-headd", which is tapered from its end toward the body or threadedportion cl2. The taper' or inclination 'of the head differs slightly from the inclination of the annular wall c2 in the slab, the Yinclination of said head being greater. The advantage in this construction will be presently pointed out. .A The head of said bolthas a tlat top surface e, Ythe diameter of which is such that it will just pass through the smaller end of the hole c in the slab. The bushing f, preferably of some suitable soft. metal, is provided with a `plurality of vertical slots g, which divide the bushing circum ferentially into a plurality ot' set-tions g', and said bushing also has a central opening g2, through which the bodyportion d2 of the bolt passes.

To secure the bolt in the hole of the slab,

' the tapered head d is inserted in the hole.

The bushing is now placed, over the threaded end of the bolt, with the section g pointing toward the tapered head. A tool h, comprising a hollow tube, is then inserted over the threaded portion d? of the bolt, with its end contacting with the bushingf.' Now by tapping on the end h .ofthe toolthejbushing is driven up around the tapered hea'dd' of the bolt andthe sections expanded and wedged in the hole c between the tapered head and the inclined wall of the hole, as shown in Fig. 6, and rigidly-secure the head in said hole. As the bushing is provided -with the slots g and spring-sections g', the latter will spring and readily conform to the shape of the head d and the hole c. in the slab. It will also be seen that the farther the bushing is driven into said hole the tighter it will bind between said inclined surfaces. The clamp t has a laterally-projecting Hange L" and a longitudinal slot i2, through which latter the threaded portion d2 of the bolt passes, and said clamp is also provided with an upwardly-projecting lugj, which takes in a notch j'on the bottom side of the slab andjprevents the clamp from ICO l. The combination of a slab having a hole with a top surface which is parallel with the bottom surface of said slab, said hole also having an annular inclined wall which tapers from said top surface where it is largest to the entrance where it is smallest; a bolt having a tapered head with a top surface which is parallel with the top surface of said hole, and a bushing of expansible material interposed between said t-apered head and the annular inclined wall of said hole.

2. The'combination of a slab having a hole with a top surface which is parallel with the bottom surface of said slab, said hole also having an annular inclined wall which is smaller at its entrance than at said top surface; a bolt having a dat head which is parallel with the top surface of said hole, and a tubular expansible bushing havinglongitudinal slots forming a plurality of spring-sections Which take circumferentially around the tapered head of said bolt and expand as they are forced into said hole.

3. The combination of a slab having a hole with an annular inclined Wall; a bolt having a tapered head which is adapted to it into said hole, the taper of the walls of said hole and the taper of said head being at different angles whereby to form an inclined space between the two and a bushing of expansible material interposed between said head and said inclined wall.

In testimony whereof I affix my signature in the presence of two witnesses.

WILLIAM A. KEEN.

Witnesses:

CHARLES B. MANN, Jr., G. FERDINAND VoGT. 

